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Foglight for Container Management 2.0 - User Guide

Rules

Foglight for Container Management allows you to create flexible rules that can be applied to complex interrelated data from multiple sources within your clusters. You can associate several different actions with a rule, configure a rule so that it does not fire repeatedly, and associate a rule with schedules to define when it should be evaluated or not.

Different types of data can be used in rules, including registry variables, raw metrics, derived metrics, and topology object properties.

There are two types of rules: simple rules and multiple-severity rules. A simple rule has a single condition, and can be in one of three states: Fire, Undefined, or Normal. A multiple-severity rule can have up to five severity levels: Undefined, Fatal, Critical, Warning, and Normal.

Rule conditions are regularly evaluated against monitoring data (metrics and topology object properties collected from your monitored environment and transformed into a standard format). Therefore, the state of the rule can change if the data changes. For example, if a set of monitoring data matches a simple rule’s condition, the rule enters the Fire state. If the next set does not match the condition, the rule exits the Fire state and enters the Normal state.

Rules can be configured to send emails, pager messages, or perform other actions you define. Performance data can be viewed and analyzed using Foglight for Container Management.

Foglight for Container Management includes a number of predefined rules used to monitor the health of your container clusters. You are allowed to modify these rules to satisfy your different requirements. Many of these rules listed and described in this section have thresholds defined within them. Those thresholds include standard deviations, utilization percentages, and so on, are default values predefined in the registry.

Kubernetes

All rules are controlled by registry variable Kubernetes:AlertSensitivity. If the value is 0, then no alarm can be fired. If the value is 1, warning level alarm can be fired. If the value is above 1, then all level alarm can be fired.

Kubernetes Administrator email address can be configured in Registry Variable KubernetesAdmin.

Health Check

This rule detects abnormal Pod health status and fires alarm for different severity abnormal health status.

KubePod

 

Pods that is in Failed or Unknown status. Or the node which is running the pod gets disconnected.

Critical

Send email to Kubernetes Administrator.

Pods that is in CrashLoopBackOff status.

Warning

None

This rule detects Pods that stays in pending phase for an abnormal long time.

KubePod

 

Pods that is pending for two continuous data submission periods because of Failed to schedule to Node.

Critical

Send email to Kubernetes Administrator.

Pods that is pending for two continuous data submission periods because container is not ready.

Warning

None

This rule detects abnormal Container health status and fires alarm for different severity abnormal health status.

KubeContainer

 

Container that is terminated for abnormal reasons.

Critical

Send email to Kubernetes Administrator.

This rule detects abnormal Node health status and fires alarm for different severity abnormal health status.

KubeNode

 

Nodes that is not Ready or out of disk or network unavailable.

Critical

Send email to Kubernetes Administrator.

Nodes whose memory or disk is under pressure.

Warning

None

This rule detects abnormal Deployment health status and fires alarm for different severity abnormal health status.

KubeDeployment

 

Deployment is not available.

Critical

Send email to Kubernetes Administrator.

Deployment has failed to create some of the replicated pods.

Warning

None

This rule detects abnormal Daemon Set health status and fires alarm for different severity abnormal health status.

KubeDaemonSet

 

Some of the pods created by the Daemon Set is not available or mis-scheduled.

Critical

Send email to Kubernetes Administrator.

The daemon set doesn’t have enough replicated pods running that meets its desired replicated pods count.

Warning

None

This rule detects abnormal Job health status and fires alarm for different severity abnormal health status.

KubeJob

 

Job that is failed.

Warning

None

This rule detects abnormal Persistent Volume health status and fires alarm for different severity abnormal health status.

KubePersistentVolume

 

Persistent Volume that is in failed status.

Warning

None

This rule detects abnormal Persistent Volume Claim health status and fires alarm for different severity abnormal health status.

KubePersistentVolumeClaim

 

Persistent Volume Claim that is in failed status.

Warning

None

This rule detects abnormal long pending Persistent Volume Claim and fires alarm for different severities.

KubePersistentVolumeClaim

 

Persistent Volume Claim that is pending for two continuous data submission periods.

Critical

None

Usage

This rule detects abnormal CPU Utilization for Pods, and fires alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities. This rule only works for those Pods that configures CPU limit.

KubePod.metrics

 

Pods whose usage is about to reach the limit, the ration is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodCpuUtilizationFatal

Send email to Kubernetes Administrator

Pods whose usage is about to reach the limit, the ration is above the value configured in critical Threshold.

Critical

Kubernetes:PodCpuUtilizationCritical

None

Pods whose usage is about to reach the limit, the ration is above the value configured in warning Threshold.

Warning

Kubernetes:PodCpuUtilizationWarning

None

This rule detects abnormal Memory Utilization for Pods, and fires alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities. This rule only works for those Pods that configures Memory limit.

KubePod.metrics

 

Pods whose usage is about to reach the limit, the ration is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodMemoryUtilizationFatal

Send email to Kubernetes Administrator

Pods whose usage is about to reach the limit, the ration is above the value configured in critical Threshold.

Critical

Kubernetes:PodMemoryUtilizationCritical

None

Pods whose usage is about to reach the limit, the ration is above the value configured in warning Threshold.

Warning

Kubernetes:PodMemoryUtilizationWarning

None

This rule detects abnormal CPU Usage for Pods, and fires alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities.

KubePod.metrics

 

Pods whose usage is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodCpuUsageFatal

Send email to Kubernetes Administrator

Pods whose usage is above the value configured in critical Threshold.

Critical

Kubernetes:PodCpuUsageCritical

None

Pods whose usage is above the value configured in warning Threshold.

Warning

Kubernetes:PodCpuUsageWarning

None

This rule detects abnormal Memory Usage for Pods, and fires alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities.

KubePod.metrics

 

Pods whose usage is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodMemoryUsageFatal

Send email to Kubernetes Administrator

Pods whose usage is above the value configured in critical Threshold.

Critical

Kubernetes:PodMemoryUsageCritical

None

Pods whose usage is above the value configured in warning Threshold.

Warning

Kubernetes:PodMemoryUsageWarning

None

This rule detects abnormal Network Receive in bytes for Pods, and fire alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities.

KubePod.metrics

 

Pods whose usage is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodNetworkReceiveFatal

Send email to Kubernetes Administrator

Pods whose usage is above the value configured in critical Threshold.

Critical

Kubernetes:PodNetworkReceiveCritical

None

Pods whose usage is above the value configured in warning Threshold.

Warning

Kubernetes:PodNetworkReceiveWarning

None

This rule detects abnormal Network Send in bytes for Pods, and fire alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities.

KubePod.metrics

 

Pods whose usage is above the value configured in fatal Threshold.

Fatal

Kubernetes:PodNetworkSendFatal

Send email to Kubernetes Administrator

Pods whose usage is above the value configured in critical Threshold.

Critical

Kubernetes:PodNetworkSendCritical

None

Pods whose usage is above the value configured in warning Threshold.

Warning

Kubernetes:PodNetworkSendWarning

None

This rule detects abnormal CPU Utilization in bytes for Nodes, and fire alarm on different severities. It is enabled by default. You can change value of the registry variables or use your own value to change the threshold of each severities.

KubeNode.metrics

 

Nodes whose utilization is above the value configured in fatal Threshold.

Fatal

Kubernetes:NodeCpuUtilizationFatal

Send email to Kubernetes Administrator

Nodes whose utilization is above the value configured in critical Threshold.

Critical

Kubernetes:NodeCpuUtilizationCritical

None

Nodes whose utilization is above the value configured in warning Threshold.

Warning

Kubernetes:NodeCpuUtilizationWarning

None

This rule detects abnormal Memory Utilization in bytes for Nodes, and fire alarm on different severities. It is enabled by default. You can change value of the registry variables or use your own value to change the threshold of each severities.

KubeNode.metrics

 

Nodes whose utilization is above the value configured in fatal Threshold.

Fatal

Kubernetes:NodeMemoryUtilizationFatal

Send email to Kubernetes Administrator

Nodes whose utilization is above the value configured in critical Threshold.

Critical

Kubernetes:NodeMemoryUtilizationCritical

None

Nodes whose utilization is above the value configured in warning Threshold.

Warning

Kubernetes:NodeMemoryUtilizationWarning

None

This rule detects abnormal Network Receive in bytes for Nodes, and fire alarm on different severities. It is enabled by default. You can change value of the registry variables or use your own value to change the threshold of each severities.

KubeNode.metrics

 

Nodes whose utilization is above the value configured in fatal Threshold.

Fatal

Kubernetes:NodeNetworkReceiveFatal

Send email to Kubernetes Administrator

Nodes whose utilization is above the value configured in critical Threshold.

Critical

Kubernetes:NodeNetworkReceiveCritical

None

Nodes whose utilization is above the value configured in warning Threshold.

Warning

Kubernetes:NodeNetworkReceiveWarning

None

This rule detects abnormal Network Send in bytes for Nodes, and fire alarm on different severities. It is enabled by default. You can change value of the registry variables or use your own value to change the threshold of each severities.

KubeNode.metrics

 

Nodes whose utilization is above the value configured in fatal Threshold.

Fatal

Kubernetes:NodeNetworkSendFatal

Send email to Kubernetes Administrator

Nodes whose utilization is above the value configured in critical Threshold.

Critical

Kubernetes:NodeNetworkSendCritical

None

Nodes whose utilization is above the value configured in warning Threshold.

Warning

Kubernetes:NodeNetworkSendWarning

None

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